Evidence map›Paper›PMID 33139659›Full record

Trial reportNutrients2020

Effects of L-Carnitine Supplementation in Patients Receiving Hemodialysis or Peritoneal Dialysis.

Masako Kuwasawa-Iwasaki, Hiroaki Io, Masahiro Muto, Saki Ichikawa, Keiichi Wakabayashi, Reo Kanda, Junichiro Nakata, Nao Nohara, Yasuhiko Tomino, Yusuke Suzuki

Registry-linked trialAbstract readClinical Trial
In one paragraph

Trial report in Nutrients, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. It is linked to trial NCT05817799 (Impact of Hemodialysis on Plasma Carnitine Levels in Patients With End Stage Renal Disease), which is not on this map. Cited by 19 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
19citing papers in PubMed, 1 pooled it
–field-weighted citation impact
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

NCT05817799 phase2 / phase3completednot on this mapstarted 2023, after this paper: background citation

Impact of Hemodialysis on Plasma Carnitine Levels in Patients With End Stage Renal Disease

TypeinterventionalSponsorBahria UniversityRan2023 to 2023Enrolled83ConditionsHemodialysis ComplicationArmsL-Carnitine 500Mg thrice daily, 1g L-Carnitine IV three times a week
3 · Its place in the literature

Who cites it

19 citing papers in PubMed, 1 synthesis or guideline pooled it.

  1. Pooled it
  2. Trial
  3. Observational
  4. Review
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  8. Observational
  9. Review
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  13. Review
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4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

10 authors.

Masako Kuwasawa-IwasakiDepartment of Nephrology, Juntendo University Faculty of Medicine, Tokyo 113-8412, Japan.
Hiroaki IoDepartment of Nephrology, Juntendo University Faculty of Medicine, Tokyo 113-8412, Japan.
Masahiro MutoDepartment of Nephrology, Juntendo University Faculty of Medicine, Tokyo 113-8412, Japan.
Saki IchikawaDepartment of Nephrology, Juntendo University Faculty of Medicine, Tokyo 113-8412, Japan.
Keiichi WakabayashiDepartment of Nephrology, Juntendo University Faculty of Medicine, Tokyo 113-8412, Japan.
Reo KandaDepartment of Nephrology, Juntendo University Faculty of Medicine, Tokyo 113-8412, Japan.
Junichiro NakataDepartment of Nephrology, Juntendo University Faculty of Medicine, Tokyo 113-8412, Japan.
Nao NoharaDepartment of Nephrology, Juntendo University Faculty of Medicine, Tokyo 113-8412, Japan.
Yasuhiko TominoDepartment of Nephrology, Juntendo University Faculty of Medicine, Tokyo 113-8412, Japan.
Yusuke SuzukiDepartment of Nephrology, Juntendo University Faculty of Medicine, Tokyo 113-8412, Japan.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

L-carnitine is an important factor in fatty acid metabolism, and carnitine deficiency is common in dialysis patients. This study evaluated whether L-carnitine supplementation improved muscle spasm, cardiac function, and renal anemia in dialysis patients. Eighty Japanese outpatients (62 hemodialysis (HD) patients and 18 peritoneal dialysis (PD) patients) received oral L-carnitine (600 mg/day) for 12 months; the HD patients further received intravenous L-carnitine injections (1000 mg three times/week) for 12 months, amounting to 24 months of treatment. Muscle spasm incidence was assessed using a questionnaire, and cardiac function was assessed using echocardiography. Baseline free carnitine concentrations were relatively low in patients who underwent dialysis for >4 years. Total carnitine serum concentration, free carnitine, and acylcarnitine significantly increased after oral L-carnitine treatment for 12 months, and after intravenous L-carnitine injection. There was no significant improvement in muscle spasms, although decreased muscle cramping after L-carnitine treatment was reported by 31% of patients who had undergone HD for >4 years. Hemoglobin concentrations increased significantly at 12 and 24 months in the HD group. Therefore, L-carnitine may be effective for reducing muscle cramping and improving hemoglobin levels in dialysis patients, especially those who have been undergoing dialysis for >4 years.

Indexed as

Dietary SupplementsAnemiaCardiomyopathiesCarnitineFemaleHeartHumansHyperammonemiaJapanKidney DiseasesMaleMiddle AgedMuscular DiseasesPeritoneal DialysisProspective StudiesRenal DialysisCarnitinehemodialysisL-carnitinemuscle spasmperitoneal dialysisrenal anemia

Identifiers

PMID33139659
PMCPMC7692097

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Registered trials

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.